Malicious PDF — malware analysis report

Static analysis result for SHA-256 20921cc45685dec4…

MALICIOUS

PDF

44.2 KB Authoring application: QPDF
MD5: 2f42cae0f223956ca6347bcfd1064d55 SHA-1: b41deeee3e5265c933ec3e2075cb675df369961c SHA-256: 20921cc45685dec46223f6604daf499de18a25e4797acee69e6b0620a2ba5bf4
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The critical PDF_SEO_LINK_FARM heuristic indicates the presence of a large number of external links, with the first identified URL being http://mydispatchers.com/uploads/1/3/0/6/130620820/delani_xewoworopagosel_nabogejivipul_rezudini.pdf. This suggests the document's primary purpose is to distribute malicious links, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://mydispatchers.com/uploads/1/3/0/6/130620820/delani_xewoworopagosel_nabogejivipul_rezudini.pdf
    • http://pittsburghcatchwrestling.com/uploads/1/3/0/3/130323425/5312016.pdf
    • http://ris.event55.ru/uploads/2020/01/28/kufedaritu.pdf
    • http://catawbapress.com/uploads/1/3/0/6/130621622/bixobixojedawovud.pdf
    • http://dirtbagcoffin.com/uploads/1/3/0/5/130588718/gijuzogosugurinawep.pdf
    • http://mtymielikki.fi/uploads/1/3/0/6/130621450/kosuj.pdf
    • http://1577kenewastreet.com/uploads/1/3/0/5/130543682/gikixukalasasurog.pdf
    • http://beyourbe.com/uploads/1/3/0/5/130550937/lesazufoduv_noxisuronu_tavof.pdf
    • http://modezo.lifefocus.online/uploads/2020/01/29/virepuditubig-zutaz.pdf
    • http://madisonrichards.us/uploads/1/3/0/4/130476313/kipaju.pdf
    • http://northcountrysuggieshop.com/uploads/1/3/0/6/130640046/gizorivefum-kemulokuta-wanepafiwumet-xebojokemal.pdf
    • http://justchryssbeauty.com/uploads/1/3/0/5/130589040/kitanuzare.pdf
    • http://tcsonline.net/uploads/1/3/0/6/130639959/130639959.html#readings+1+eso+ingles

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000153a.bin
64fb26f748b849a0d3c0c685fd0995d9f00991e712436d4880a793362b819c25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x153A 8860 bytes
font_01_sfnt_off000065a2.bin
f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65A2 16204 bytes

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